Portable heater



Jul 11, 1939. w, L MKIN' 2,165,390

PORTABLE HEATER Filed July 15, 1937 Patented July 11, 1939 UNITED STATESPATENT OFFICE PORTABLE HEATER William L. Lamkin, P'orterville, Calif.Application July 15, 1937, Serial No. 153,855

1 Claim. (Cl. 4438) This invention relates to an improved portablechamber when the body is standing on its end. heater for use inprotecting orchards, vineyards, A metal cover is provided for the top ofthe gardens and trees from damage by frost. body having 2. dependingmarginal flange which At present heaters employed to protect orengagesover the sides of the body. In Fig. 5

5 chards from damage by frost have consisted of the square type ofheater is shown, while in metallic receptacles for holding thecombustible Fig. 6 the circular type is shown, the body 26 of materialto be burned and are objectionable bethe circular type being of the sameconstruction cause of the large number which must be used as the squaretype except for its outer configurato protect an orchard of largeocrea'ge and the tion. A modified type of cover II is shown in 10 costof the labor which must necessarily be em-' Fig.6 which includes theprovision of transverse 1O ployed to maintain the receptacles in properribs I 2 arranged in crossed relation beneath the working condition.cover and connected to the depending flange of It is an object of thepresent invention to pro-. the cover. The ribs l2 serve to support thecover vide a heater which is constructed wholly of a on the upper edgeof the body in raised relation combustible material pressed or moldedinto a thereto to allow for a draft beneath the cover. 15

shape which will insure its ready burning fora In use, the chamber 24 ofthe heaters is filled pre-determined time, thus eliminating the needwith kindling of a type which will produce an of using metal containers.intense heat to readily ignite the body of the Other objects andadvantages of the invention heater which will burn until the entire bodyhas will be apparent during the course of the followbeen consumed. Toprolong the burning of the 20 ing description. heater briquettes may beplaced in the chamber In the accompanying drawing, forming a part 24, orthe size of the heater may be increased. of this specification and inwhich like numerals The opening 23 in the bottom of the chamber areemployed to designate like parts throughout and the vents 2| in thewalls of the chamber 25 the sameprovide sufficient draft to insureburning of the 25 Fig. 1 is a top plan View of the heater, entire heaterand the metal cover protects the Fig. 2 is a vertical sectional view ofthe same, heater'from rain. Thus, it is seen I have pro- Fig. 3 is'aside elevation of the heater, vided a heater which is inexpensive toconstruct Fig. 4 is a bottom plan view of the same, and which isentirely consumed by burning, Fig. 5 is a perspective view of the heaterwith eliminating the necessity of maintaing recep- 3 the cover removed,and, tacles.

Fig. 6 is a perspective view of a slightly dif- It is to be understoodthat the form of my ferent form of heater with the cover partly ininvention herein shown and described is to be section. taken as apreferred example of the same and that In the drawing, wherein for thepurpose of certain changes in the shape, size and arrange- 5illustration, I have shown a preferred embodiment of the parts may bemade without department of my invention, the numeral 20 denotes ing fromthe spirit of the invention or the scope the body of the heater which iswholly constructed 7 of the subj oined claim. of combustible materialsuch as coal dust and a Having thus described my invention, I claim:

40 suitable binder or other materials employed in A heater of the typedescribed comprising an 40 the manufacture of briquettes. Thecombustible elongated upright body of molded combustible material ispressed or molded to form a body of material, said body having a centrallongitudinal square or circular shape in cross section having chamber ofinverted frustro-conical shape open a frustro-conical chamber or. recess24 arranged at the top, adapted to receive kindling, the side centrallyand longitudinally of the body and the walls of said body having aseries of vents there- 45 walls of the chamber have a series of vents 2|through communicating with the chamber and extending transverselytherethrough- The botthe bottom wall having a central vent extending tomof the chamber 24 is provided with a central therethrough, and achannelextending across the draft opening 23 which communicates with thebottom of said body open at its ends and interchannel 22 extendingacross the bottom of the secting the vent in the bottom wall. 50

body which permits air to enter the bottom of the WILLIAM L. LAMKIN.

